function loginClick(){
    let user=document.getElementById("user").value;
    let password=document.getElementById("password").value;
    if(user=="admin"&&password=="123"){        
        window.location.href="http://47.116.207.219/homePage";
        alert("验证成功！");
    }
    else{
        user="";
        password="";
        alert("验证失败！");
    }
}